6556998 has 16 divisors (see below), whose sum is σ = 14987520. Its totient is φ = 1873416.

The previous prime is 6556993. The next prime is 6556999. The reversal of 6556998 is 8996556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6556993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78018 + ... + 78101.

It is an arithmetic number, because the mean of its divisors is an integer number (936720).

Almost surely, 2^6556998 is an apocalyptic number.

6556998 is an abundant number, since it is smaller than the sum of its proper divisors (8430522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6556998 is a wasteful number, since it uses less digits than its factorization.

6556998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156131.

The product of its digits is 583200, while the sum is 48.

The square root of 6556998 is about 2560.6635858699. The cubic root of 6556998 is about 187.1694727962.

The spelling of 6556998 in words is "six million, five hundred fifty-six thousand, nine hundred ninety-eight".